Park Tool, FAG-2 Frameset Alignment Gauge

After a crash or accident, a bicycle frame may become misaligned, causing handling issues, shifting problems and wheel installation difficulties. The Park Tool Frame Alignment Gauge measures three points of contact on the frame — the head tube, seat tube, and rear dropouts — to ensure that it is perfectly straight. 39" (99 cm) long with an adjustable dropout indicator to fit most sizes and types of bicycles.